Pencil



PENCIL Find ma 9,

F. R. BARTHOLOMEW ET AL.

May 2? i924@ Patented Mey 27, 1924.

rasata PATENT omer.

FEED r. BAE'rHoLoMEW, FRANK I. VIERLING, ANI) oItLo A. BAE'IIIoLoMEw, or

MINNEAPOLIS, MINNESOTA.- AssIeNoRs To STERLING SPECIALTIES MANUFAC- TUBING COMPANY.

PENCIL.

Application vled May 9, 1921. Serial No. 468,082.

To all whom t may concern:

Be it known that we, FRED R. BARTHoLo- MEW, FRANK J. VIERLING, and ORLO A. BARTHOLOMEW, are citizens of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota,

have invented certain new and useful Improvements in Pencils; and we do hereby declare the following to be a full, clear, and

exact description of-the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to improvements in pencils of the type disclosed and claimed in the pending application of Fred R. Bar-y tholomew and Frank J. Vierling, filed September 30, 1920, under 4Serial Number 413,708, and has for its object to improve the same in the several particulars herein- 2o after noted.

To the above end, generally stated, the invention consists of the novel devices and combination of devices hereinafter described and defined in the claims. 1

In the accompanying drawings which i1- lustrate the invention, like characters indicate like parts throughout the several views.

Referrmg to the drawings Fig. 1 is a side elevation of the pencil having the invention embodied therein;

Fig. 2 is a view partly in side elevation and partly in longitudinal central section;

Fig. 3 is a view in longitudinal central section taken on the line 3-3fof Fig. 2, with sa the casing removed;

Figs. 4, vand 6 are views in transverse sections taken on the lines 1 -4, 5-5 and 6--6 of Fig. 2, on an enlarged scale;

Fig. 7 is a detail view of the lead-holding @e stem; and

l Fig. 8 is a fragmentary detail view in section taken on the line 8-8 of Fig. 2 and illustrating how a piece of lead maybe removed from the lead chamber.

as The numeral 9 indicatesa casing that is hexagonal in cross section, both inside and outside, throughout its entire length, except at .one end, which is tapered to afford a point 10. A cylindrical cap tube 11 is loosean y telescoped part way into the casing 9, and pressed onto the outer end thereof is a ca vtube extension 12, the lower end of whic', as shown, loosely extends into the upper end of the casing 9. An external annular bead 13, on the cap tube extension 12, engages the upper end of the casing 9 as a stop. The upper end of the cap tube extension 12 is tapered above the bead 13 toV lateral movement and in axial alignment with the nose orV lower end of the point 10, through whicha piece of lead may be fed, as will presently appear. v

The upper end of the cap tube 11 is rota; tively mounted in a longitudinally split bearing sleeve 17 held against axial movement between the'cap tube extension 12 and an external annular bead 18 on said tube 11. Primarily, the bearing sleeve 17 loosely fits aroundthe cap tube 1-1 and when inserted into the casing 9, together with the cap tube 11 and feed screw 15, is contracted by said casing onto the cap tube 11 and held against rotatlon by its frictional engagement with said casing. To assist in causing the bearing sleeve 17 to enter the casing 9, the lower end thereof, is beveled at 1,9, and to still further assist in causing the said sleeve bearing to enter the casing, the same is primarily tapered by contracting the lower end thereof, as shown in Fig. 3. Obviously, the bearing 16 and bearing sleeve 17 hold the cap tube 11 and feed screw 15 with freedom for rotation in the casing 9. To yieldingly and releasably hold the cap tube 11 and feed screw 15 against removal from the casing 9, there is pressed inward from said casing, a pair of diametrically opposite points or lugs 20, which extend into an annular groove 21 formed in the bearing sleeve 17.

Axially movable in the tubular feed screw 15, which forms a portion of the lead feeding mechanism, is a tubular lead feeding stem 22, formed, as shown, by folding a single sheet around a pin 23 havinga radiall extended blade 24 at its upper end whic works in a longitudinally extended `guide slot 25 in the feed screw 15. Endwise movement is imparted to the feed stem 22,@

notching its blade 24 to receive a hexagon nut 26 on the' feed screw 15. rllhis'hexagon nut 26 is held against rotation by the hexavgon casing 9, but with freedom for axial traveling movement therein. The blade 21 is held in the slot 25 against turning movement, but isv free to move endwise with the nut 26. 0n the lower end of the lead feeding stem 22, below the pin 23,l isaJ pairof yielding jaws 27 adapted to receive and hold one end of a piece of lead Z, said'lead'being in position to move in the :feed screwI 15 and through the nose of the point 10, under the traveling action of the nut 26, imparted thereto by turning the cap' tube extension 12 in respect to the casing 9.

The cap tube 11 adords a lead chamber 28 having a longitudinally extended entrance passageway 29, through which said chamber may be filled with extra leads Z1, or said leads removed therefrom. The ends of the lead chamber 28 are closed by flanged disks 30 pressed into the cap tube 11 and it is important to note that the uppermost of said disks is located considerably above the entrance passageway 29. An eraser 31 is secured in the upper end of the cap tube extension 12. The entrance passageway 29 in the lead chamber 28 is normally closed by a longitudinally divided ,sleeve 32 rotatively mounted on the cap tube 11 and held against axial movement by the bead 18 and an annular bead 33 pressed from said cap tube. The longitudinal edges of the sleeve.

32 are spaced to ad'ord, therebetween, an entrance passageway 341 adapted to be brought into alignment with the passagewa 29 to open the lead chamber 28, as best s own in Fig. 5. To remove one of the leads Z1 from the lead chamber 28, an endwise pull on the cap tube extension 12 will spring the points 20 out of the groove 21 and permit the pencil to be. removed from its casin 9 `after which the sleeve 32 may be rotate to open the assageway 29 to the lead chamber 28. ile the pencil is still held by the cap tube extension 12, the same may be inverted and given a slight lateral shake to cause one of said leads to roject through the passageway 29, as best shown in Fig. 8. llt will be noted that the lead Z1, which extends through the passageway 29, is held in its inclined position by engagement with one end 'of said passageway, which, asv previously stated, is spaced inward of the upper disk 30. Preferably, as shown, the passageway 29 is of less length than the normal length of the lead Z1 so that said leads are not so liable to drop out of the passageway 29 when the pencil is turned on its side. When the lead feeding mechanism is used in connection with a pencil having a round casing, the sleeve 32 may be dispensed with for the reason that such casing would close the entrancev passageway 29, but in a pencil neeaeea having a hexagon casing, the sleeve 32 is highly important for the reason that the cap tube does not closely en age the walls et such casing. However, te sleeve 32 is important, irrespective oit 'the form of the pencil casing for the reason that it closes the lead chamber 28 when the lead feeding mechanism is removedfrom the casing.

'lhe above invention has, in actual usage, proven highly ecient for the purpose had in view.

What 'we claim is:

1. A pencil/comprising a casing, a cap tube, `La contractible and expansible bearing sleeve on the cap tube and insertible there.- with into the casing, said bearing sleeve being arranged to be contracted onto the cap tube by its insertion into the casing, and

lead-feeding mechanism carried by the tube.

2. A pencil comprising a casing, a ca tube, a longitudinally divided contractib e and expansible bearing sleeve on the cap tube and insertible therewith into the casing, said bearing sleeve being arranged to be contracted'ontothe cap tube b its insertion into the casing, and lead-feeding mechanism carried by the tube.

3. Ae ncil comprising a casing, a cap tube, a ongitudinally divided contractible and expanslble bearing sleeve on the cap tube and insertible therewith inte the casing, said bearing sleeve being arranged to be contracted ente the cap tube by its insertion into the casing, means on the cap tube for holding the bearin sleeve against axial movement thereon, an lead-feeding mechaand expanslble bearing sleeve on the cap 4 tube and insertible therewith inte the casing, said bearing sleeve being arranged te be contractednonto the cap tube by its insertionl into the casing, menus on the cap tube for holding the bearing sleeve against axial movement thereon, said bearing sleeve and casing having yielding interlocking engagement to hold the bearing sleeve and cap tube against axial movement in the casing, angl lead-feeding mechanism carried by the tu e. f

5. A pencil comprising a casing, a cap tube, a lon 'tudinally divided contractible and expansible bearing sleeve on the cap tube and insertible therewith into the casing, said bearing sleeve bein arranged to be contracted onto the cap Vtu b its insertion into the casing, means on t e cap tube for holding the bearing sleeve against axial movement thereon, said bearin sleeve and casing havin yielding interloc 'ng engagement to hol the bearing sleeve and cap tube against axial movement in the casing, the lower end of the bearing sleeve being beveled for engagement with the casing to ltll lll

cause the same to be contracted thereby dur- ,ing its insertion into the casing; and leadfeeding mechanism carried by t tube.

6. A pencil comprisin a casing, a cap tube, a loose longitudinaly .tible and expansible bearing sleeve on the cap tube and insertible therewith into the casing, said bearing` sleeve being arranged to be contracted onto the cap tube by its insertion into the casing, means on the cap tube for holding the bearing sleeve against axial movement thereon, said-bearing sleeve and casing'having ielding interlocking engagement to hold t e bearing sleeve and cap tube against axial movement in the casing vbut free to rotate in respect thereto, and lead-feeding mechanism carriedby the tube, 7. A ncil comprising a casing, a cap tube in t e casing, a cap tube extension telescoped onto the cap tube, a bearing sleeve in which the cap tube is rotatively mounted,

said bearing sleeve being held by the casin against rotation and i held against axia movement on the ca tube by. the cap tube extension and a bea on the cap tube, and lele-feeding mechanism carried by the cap tu A' 8. A pencil comprising a casing, a cap tube telescopically mounted in the casing affording a lead chamber having aA longitudinal entrance passageway so arranged that a lead in the lead chamber may be tipped into a position in which it projects obliquely out of said passa eway, and leadfeeding mechanism carried y the tube.

9. A pencil comprising a casing, a cap tube, telesco ically mounted in the casing, affording a ead chamber having a lon itudinal entrance passageway normally within the casing, the bottom of the lead chamber being below the entrance passageway whereby, when the cap tube is withdrawn from the casing sufficiently to expose the entrance assageway, a` lead in the lead chamber may be tipped, while resting on said bottom, so that one end thereofA projects through the entrance" passageway and is su ported in an oblique positlon, and` lead fee mg mechanism carried b the captube.

10. A penci comprislng a casing, a cap tube, telesco ically mounted in the casing, affording a ead chamber having a lon tudinal entrance passageway normally wit in the casin a sleeve mounted on the cap tube, normal y closing the entrance passageway and movable into a position to oplen said passageway,'and lead operating mec anism carried b the cap tube.

*11. A penci comprlsing a casing, a cap divided contractube, telescopicall mounted in the casing,

affordin a lead c amber and having 'a longitudina entrance passageway normally within the casing, a sleeve rotatively mounted in the casing, normally closing the passageway and having a passageway arranged to be brought into registration with the passageway in the ca tube, and lead-operating mechanism carrie by the cap tube.

12..A pencil comprising a casing, a cap tube, telescopically mounted in the casing, aiordin a lead chamber and having a longitudina entrance passageway normally within the casin and alongitudinally d1- vided sleeve, the ongitudinal edges of which are spread to 'afford a passageway therebetween, said sleeve being rotatively mounted on the cap tube, normally closing the passageway in said cap tube and adapted to be rotated into a position to bring its passageway into registration with the passageway in the cap tube, and lead-operating mechanism carrled b the cap tu c 13. A penci comprising a casing, a cap tube in the casing affording a leadchamber and having a longitudinal entrance passageway, and a lon itudinally divided sleeve, the longitudinal e ge's ofwhich are spaced to aiord a passageway therebetween, said sleeve being rotatively mounted on the cap tube, normally closing the assageway in said cap tube and adapted to rotated into a positloncto bring its passageway into registration with the passageway in the cap tube, beads on the cap tube holding the sleeve against axial movement, and lead-operating mechanism carried by the cap tube.

14. A pencil comprising a casing, a cap tube in the casing, a longitudinally divided bearing sleeve in which the cap tube is r0- tativel mounted and which bearing sleeve is heldY against axial movement on the cap tube, said bearing sleeve being adapted to be contracted b the 'casing when the cap tube is inserted t erein: and held by said casing against rotation, an annular groove and a projection extending therein, said groove and projection being formed, the one in the casing and the other in the bearing sleeve for releasably holding said ca tube against axial movement in the casing but with freedom for rotary movement in the'4 bearin sleeve, and lead-feeding-mechanism carrie by the cap tube.

In testimony whereof they aiiix their signatures.

' FRED R. BARTHOLOMEW.

FRANK J. VIERLING.

ORL() AA.. BARTHOLOMEW. 

